Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Asian Journal of Ecotoxicology》 2010-06
Add to Favorite Get Latest Update

Ecotoxicological Effects of Pb on Brassice rapa

TAO Ling1,2,REN Jun1,2,CUI Gui-yang1,2 1.School of Environmental and Municipal Engineering,Institute of Environmental Ecology,Lanzhou Jiaotong University,Lanzhou 730070 2.Demonstration Center for Experimental Teaching of Environmental Science and Technology in Colleges of Gansu Province,Lanzhou Jiaotong University,Lanzhou 730070  
Water culture methods have been used to study Pb enrichment capability and tolerance of Brassice rapa seeds and seedlings.6 concentrations of Pb were set:0.2mg·L-1,0.4mg·L-1,0.8mg·L-1,1.6mg·L-1,3.2mg·L-1 and control.After Brassice rapa seeds cultured in these solution for 7 days,the rate of seed germination,stem growth inhibition rate,root tolerance index,chlorophyll and carotenoid content and the amount of lead concentration were measured.The ability of enrichment and tolerance of Brassice rapa seedlings to Pb studied using the indoor culture technique.The results show that Brassice rapa seedlings had high ability of enrichment to Pb.Roots were main organs of enrichment of Pb.The maximum capacity of the root concentration is 75.46mg·L-1.Pb inhibited Brassice rapa seed germination and seedling growth.With 0.2mg·L-1,Pb promoted the growth of Brassice rapa stems.High concentrations of Pb inhibited the growth of Brassice rapa stem.Pb inhibited the chlorophyll synthesis and Carotenoids and the normal growth of Brassice rapa seedlings.Brassice rapa has a certain tolerance to Pb.
【Fund】: 国家自然科学基金(No.30970490);; 长江学者和创新团队发展计划(No.IRT0966)
【CateGory Index】: X171.5
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved